Hijiri Sensei/Noin

Noin is the old Jeanne of arks lover(the one before Maron) He became a demon beacause he was jealous of god. Thinking the recarnation was like his love he tried to rape her so she couldn't be jeanne

Minazuki

Minazuki is your average geek. With a huge crush on Maron. Trying to catch Sinbad so Maron will kiss him. He's like Myako in alot of ways. In the sixth book minazuki catches sinbad. BUt in the next five minutes Sinbad runs a way. MIna zuki reveals his feelings for Maron. Only to be brushed off. In the end he asks Myako out . Also brushed off by her too.